Multiple Choice
An allergen
A) is a toxic substance.
B) is a natural pathogen.
C) over-stimulates the immune system.
D) attacks the nervous system.
Correct Answer:

Verified
Correct Answer:
Verified
Related Questions
Q12: Infectious diseases such as diarrhea are closely
Q13: Historically,which of the following considerations in setting
Q14: Detection of toxic chemicals depends upon<br>A)how many
Q15: Infectious diseases that were previously not known
Q16: In 1918 a flu pandemic killed more
Q18: A chemical that causes abnormalities in a
Q19: Which would not be characteristic of a
Q20: With respect to exposure to toxins which
Q21: As a society,we usually focus money and
Q22: The World Health Organization regards health as